Filling-fork grid for looms



' Oct. 12, 1926.

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' H. A. DAVIS FILLING FORK GRID FOR Looms Flled March 15 1926 ATTORNEY" Patented Oct. 12, 1926;

1 1,503,236 TENTffO FF'I-CE.'

, FILLING-FORK GRID someo es- Application filed March'.15, 1926-. Seria1No;i94,922u

This-invention relates to looms and more particularly to the mounting of the filling fork grid on the lay Itvis now. the common practice to provide looms with a -filling fork 5 which cooperates with a filling; forkgrid mounted on the lay-t0 determine v whether or not fillinghas been laid: in theshed, and on its absence to' effect a change in loom operation;,; V 1 i }In general practice the filling fork'grid has been ordinarily mounted on the back plate of the shuttleq-boxand in: some'iinstanfces it: has beenmounted directly on the lay. Inasmuch asthe' tines of the filling fork must cooperate with the spaces between'thefgrid bars, it has'beenasugge's'ted heretofore to provide means'ffor adjusting the fillingfork gridlaterally, that is, in a direction transs versely of the loom. 11 ,1 When the-v shuttlei 'is -picked during .the weaving operation, the back of'the shuttle usually rests upon tliej front face of the reed,- and at the end, of therreed the-,- filling fork-1 grid is usually located. Should-the 2 filling forkgrid have the front faces ofits bars; projected f beyond the plane oftheifront face of the'reed, serious injuryto the shuttle isliable to, result. 7 On @the other hand, should the front face of the grid be too far back of 3. the plane of the reed, thjefillingwmaynot'be positioned; to effect a suflicient tiltingmovemerit; ;of the 'filling" fork; 'as the lay "moves frontwardly- Since the; function ofthe fill ing fork'grid; is to hold the filling in position 135 to; tiltathe fillingfork on*-beat-up, -the plane 7 offl-the front face of "the grid; should be substantially in the; plane ofjthe front face of thereed, so that on the beat-up, the parts will .performtheir proper functions. 'j The 40 reed, however, is mounted between the lay andthe'top bar thereof, and owingto' the constant rccurringjbeat-upi movement BX? ertedv on thefilling. thread, it: is liable; togbecome} worn or displaced from. its original 45, position, withthe-resultthlfi the front face ofthe gridmayproject frontwardly or be; yond the plane of the; front face t of th'ereed and canse injury to the shuttleduringqits pickingjmoyements. I

I In, is i also desirable; 'that fthegiillling Lari:

grid be not only mounted for position rel ative to} thewfront face 5 of. the {reed 'tQ-over} -c, m 1 h r;a v bjec ien but tha it shal be laterally movable, that is, transverselyof th logm tq bringathe spaces betweenigthe grid bars into cooperating relation with the tines oftheifillingfork. i

One of :theobjects of the present invent1on is Jtoprovide a grid mounted on the vla-ywhich" willenable the grid to be properly positioned relative to the front'faceor plane of thereed'and alsorelative to'the tineszof the filling fork. In accordance with thepreferred formpf the, invention, the

fillingfork grid is provided witha basepor-v tion which is securedtofth'e lay" to permit movement of the grid bodily towards and fromthe front of the lay into the plane of' tlie reed, and a further feature of the invention'coiisists'in securing the filling fork gridto the lay with the above characteristic capacity for movement. into the plane of. the

transverselyoftheloom. n I

l 'lheinvention' and novel features thereof 'Will best be'inade clear from the following description and the accompanying drawings I vof o11e=good,f0rm' of the; filling fork grid their desired coinciding planes; and 4 :uFlg. 8* is a detail View looking from the rear of the layl'and showing the grid mount.-

- The, fillingfork is usually employed to or effect: replenishment but since such mechanism forms no part of the'present inven- I tion which more directlyrelates to the grid mounting, such features are" not: herein shown. 5;? y

JJTllBj'lflY-SWUIdS 1,-o'nly one 'of which is shown,have secured: thereto the usual lay '2,

Y which is provided. with-"shuttle boxes 3 The racedson-dwhichfithe 'shuttle rests as it is picked,c;isi provided With'the usual groove to re'ceive :the-10'wer edge portion of the reed '77,, while :theupper edgeportion of the reed is retainedfinal'groove in the top rail 5, but-since such features are; well-known and athedetailsflthereof form no part of the present; intention, nogfurther description ofk'these'matters appears necessary. The top orjhandwrail -5.is;=secured to "the upwardly reed, and "also in a lateralldirection, that is,

e5 v the grid and thef'frontfacebf the reed in 'eitliergstopfthe loom on failure of filling extending arm 6, as .usual, and the lay is given its usual beat-up movementsthrough a pitman or arm 8 which may be actuated from the crank shaft. V

' Mounted at the front of the loom is the usual filling fork sl de 9 on which is pivotally mounted the filling fork 10, the tines sentthe filling to the filling fork to tilt it should fillingbe laid in the shed. The filling fork grid 12.-is provided with asupporting base 141 which as shown may extend rearwardly of the lay, and is provided with a slot 19 which extends frontwardly and rearwardly relative to the lay.

In accordance with one feature of the present invention, the filling fork grid is to be supported from the lay for movement frontwardlyi'and rearwardly relative to the plane of the front faceof the reed, and as one good form of means to this end the present invention provides a bracket 16 having'a supporting head portion 15 on which rests the supporting base 1 1 of the grid, and in order that the. grid may be guided in its movement towards and from the plane of the reed, guiding means are provided between the head 15 and thebase of the grid. In the present instance, such guiding means is secured by providing the supportinghead 15 with the side flanges 17, between which the base 1 1- ofthe grid maybe movedfrontwardly or rearwardly and finally. secured in its desired position with the front face of the grid in the plane of the front face of the reed, by means of a securing bolt 18 which passes through the elongated slot 19 formed in the base of the grid and into the head 15 of the bracket. The bolt l8'may be of usual construction and liavea nut 20 by which the base of the grid and the head of the bracket may beiclamped in fixed position.

From the construction described it will be apparent that should the reed become worn by its recurring contacts with the shuttle, or should the'reed mountings wear, the filling fork gridm'ay be readilymoved to bring its front'face into alignment with the plane of the front face ofthe reed by manipulation of the securingbolt, and thereupon the parts may be secured infixed relation.

it? frequently happens that theitines of the filling; fork and the spaces between the hars ofthefilling fork grid may not'be properly related, .owing to the wear of the parts connected toZ'ithe lay. Indeed it 'sometimes happens that the lay itself may deviate from its original course to and from the front of the loom and be laterally displaced somewhat, and to meet this condition the present invention provides means for adjusting the bracket on which the filling fork grid is mounted.

In the present instance .of the invention,

thebracket16 extends downwardly and laterally from the supporting head 15 and is provided with slots- 22 substantially at right angles to the direction of the slot 19 in the base of the filling fork" grid, the construction being such that should the tines'of the filling fork and the spaces in the filling fork grid not properly register on a-beatup movement of the lay, the bracket 16 may bereadily moved in a 'latera'l direction or transversely of the loom to rectify the alignment, and'should the wear ofthe parts necessitate rearrangement of the filling fork grid relative to the bracket, in a f-rontward; or rearward direction, to bring 'thefront face of the filling fork grid into the plane of the front face of the reed, manipulation of the bolt 18 readily'effects this result.

From the construction described as one good practical form of the present invention, it will be apparent that the filling fork grid maybe readily moved in a-d irection towards and from the front of :thelay to bring the front-face of the filling fork grid into the plane ofthe front face of the reed, and is readily moved in a lateral direction or transversely of the loomto rectify the alignment of the openings ofthe grid with the tines of the filling fork, and after such rectification the parts may be secured rigidly in their new positions. I 5

1'. In 'aloom, the combination of 'the lay having a reed, a fillingfork grid, and means for securing the grid to the lay'in' different positions, comprising a bracket having a grid supporting head, devices for securing the bracket in different positions trans versely of the loom, a supporting base upon the grid constructed to fit'the supporting head for movement towards and from the plane of thereed, and means 'for securing the base to the brackethead in different positions relative to the plane of the reed,

2. In a loom, the combination of the lay having a reed, a filling'fork grid having a supporting base, a bracket adapted to be secured to the lay in diiferent positions transverse1y=0f theloom and'havinga head,1co operating means between the head and base of the grid for guiding the latter in its movement towards and from'the front of the loom, and means forclamping the base of the grid to} the headj'of the bracket; in differgnt pos'tions relative to theplane ofthe ee v .I IS;

3.111 a loom, the combination of the lay,

a filling fork grid having a supportin 0 base, a grid supporting bracket. secured to the lay and having a head to receive the supporting base of the grid and permit movement of the grid towards and from the front of the lay, and means for clamping the grid supporting base to the bracket head in different ,posii tions relative to the front of the lay.

4. In aloom, the combination of the lay having a reed securedthereto, a filling fork grid, and devices for securing the grid to the lay in different fixed positions relative to the reed,one towards and from the adjacent edge of the reed" and the other tof face plane of the grid may be positioned into the plane of the frontsurface of thereed to compensate'for Wearof the reed.-

name to this specification.

HARRY A. DAVIS.

In testimony whereof, I have signed my. 1 

